Gas-burner.



No. 729,224. PATENTED MAY 26, 1903.

.J. A. SGHOLZ.

GAS BURNER.

APPLIOATION nun an 31. 1001.

N0 MODEL.

WlTNESSES: INVENTOR M alive 3562mm m: Nmms PETERS co, mom-U010.WASHINGTON, o, c

rm) STATES Patented May 26, 1903.

PATENT OFFICE.

JOHN A. SCIIOLZ, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TOCHARLES O. SOIIOLZ, OF PITTSBURG, PENNSYLVANIA.

GAS-BURNER.

SPECIFICATION forming part of Letters Patent No. 729,224, dated May 26,1903.

Application filed May 3]., 1901.

To L'LZZ whom it may concern;

Be it known that I, JOHN A. SOHOLZ, a citizen of the United States,residing at Pittsburg, in the county of Allegheny and State ofPennsylvania, have invented or discovered certain new and usefulImprovements in Gas- Burners, of which improvements the following is aspecification.

The invention described herein relates to [0 certain improvements ingas-burners whereby a second combustion is effected, one such combustionoccurring within a closed chamber wherein the products of such firstcombustion and gas are mingled with a suitable proportion of air and thesecond combustion taking place outside of such mixing-chamber by theburning of the mixed gases and air.

The invention is hereinafter more fully described and claimed.

In the accompanying drawings, forming a part of this specification,Figure 1 is a top plan view of one form of my improved burner. Fig. 2 isa plan view of the underside of the burner. Fig. 3 is a sectionelevation on a plane indicated by the line III III, Fig. 1.

In the practice of my invention, as illustrated in the drawings, Iemploy a main burner consisting of an annular case or shell 1, having acircular orifice at its upper end, while its lower end is closed by aplate 3, having orifices or openings therein,which are adapted to beclosed by a movable plate i, mounted upon the plate 3. Over the outletor circular orifice at the upper end of the main burner is arranged anannular spreading-plate 5, suitably centered over the orifice andpreferably supported by lugs 6, formed on the inner walls of the burnerand serving as supports for centering the lugs 7, formed on the underside of 4c the spreading strip or plate. IVithin the annular chamber ofthe main burner is arranged an annular. burner 8, preferably provided onits upper edge with a rib 9, through which small perforations are formedfor the escape of gas. This burner is connected to a supply-pipe 10,extending out through the wall of the casing or shell and connected to amixing-chamber 11, into which projects a gas-supplying jet 12. Theannular burner is arranged at a suitable distance from the outlet-portor circular openin g in the upper endof the main burner, so as to permita combustion of gas entering through fierial No. 62,519. (No model.)

the supply-pipe 10, such gas being mingled with a suitable quantity ofair to permit a combustion thereof. The products of combustion and gasescaping from the annular burner 8 are mingled with air entering inregulated quantities from the base of the main burner, and such mingledgases and air escape through the circular orifice in the upper end ofthe burner, where a second and complete combustion occurs. By theprimary combustion within the chamber its walls become highly heated, soas to heat the mingled products of combustion and gases therein, andthereby increase or facilitate such second combustion.

I claim herein as my invention 1. The combination of an external shellhaving upwardly-converging sides, a shell having upWardly-divergi11gsides arranged within the external shell, said shells forming betweentheir upper edges an annular slot or burner, an annular primary burnerarranged in the combustion-chamber formed by said shells and connectedto a gas-supply, substantially as set forth.

2. The combination of an external shell having upwardly convergingsides, a shell having upwardly-diverging sides arranged within theexternal shell, thereby forming a combustion-chamber, said shellsforming be tween their upper edges an annular slot or burner, valvedinlets for the combustionchamber, an annular primary burner arranged inthe COIllbllSillOll-GlltlIlbQl formed by said shells and connected to agas-supply, substantially as set forth.

3. The combination of an external shell having upwardly-convergingsides, a shell having upwardly-diverging sides arranged within theexternal shell, said shells forming between their upper edges an annularslot or burner, a spreading plate over said slot or burner, an annularprimary burner arranged 95 in the combustion-chmnber formed by saidshells and connected to a gas-supply, substantially as set forth.

In testimony whereof I have hereunto set my hand.

JOHN A. SCIIOLZ. \Vitnesses:

DARWIN S. WoLoo'rr, GEO. B. BLEMING.

